Pump



3 Sheets-Sheet l June 30, 1925..

H. M. GREEN PUMP Filed Deca lllll E a wl June 30, 1925.

H. M. GREEN PUMP lFiled Dec. l, 1922 3 Sheets-Sheet 2 Hawk/7: G'REEM 3 Sheets-Sheet 5 June 30, 1925 H. M. GREEN PUMP Filed Deo. l, 1922 mu/e bfi-wer f7 GAEEM Paenad Julie 3o, 1925.

HENRY M. GREEN, 0F LOS ANGE-LES, CALIFORNIA, assIGNoR 'ro r. HoPKINs,

or coUNcIL BLUrFs,'1owa 1 -IPUMPL `.lippiia'aon ned maenner 1 1922. serai No. 6o4,s37.j

To all whom t may concern: i

Be it known that I, HENRY M. GREEN, a citizen of theUnited States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and'v useful Improvements in Pumps, of which the following' is a specification.

This invention relates to deep well plunger pumps, and has for an object to provide any improved form of packing and plunger. Another object is to provide meansforxautomatically expanding the deformable' packing and which expansion is secured by the action of the load superimposed on the lift- -ing stroke of the plunger. Another object is to provide an vimproved packing swab.

A further object of theinvention is` teprovide in a pum in which there is a tight fitting, reciprocating plunger means for by# passing the load' above the plunger to vdis-v charge accumulated sand and occasions of necessity.

Another object 1s to provide a pump plunger with one or more deformable and expansible packing swabs and means operative automatically to lock the compressed and expanded packing swabs.

Other objects and advantages will be made manifest inthe following specification of embodiments ofthe invention illustrated in the accompanying drawings, wherein Figure 1 is a central longitudinal section ofia form of theinvention.

. Fig. 2 is a central longitudinal' section showing the swab plunger in elevation and in sand or'pump discharging position with respect to by-pass means.

Fi". 3 is a longitudinal central section and partial elevation of' the pump.

`Fig. 4 is 'a perspective of a swab device before introduction into the pump plunger.

Fig. 5 is a. cross section through the swab showing the carrying, ring.

Fi 6 is a central longitudinal section showlnf in detail the automatic swab lock.

liquid upon Fig. is a plan of the lock jaws and cross` section of the plunger tube.

Fig. 8 is a side elevation and sectional view of one of the swab expand'ing'cups.

Fig. 9 is a side elevation and partial section of a modified form of swab cup.

the improved ump showing the utilization of the modified) form of swab cup.

The improved pump is of the type usually employing an vexternal cylindrical jacketA 2, the upper end ofwhich is Screwed into a pipe joint or itting Sito which is secured the lower end of the yusual pump pipe 4 through whichk reciprocatcs the `usual polish orsucker rod. The lower end of the .pump jacket 2 is connected to -a foot joint 6l to which 'ma be connected thepusua'l inlet ksuction or pe oratedsleeve 7 leading down into the well. Thejoint 6 also formsa'seat 6"*v for, the standing valve of the pump,and this is shown as includingv a ball 8 arranged in a cage 9 and which` is provided with a bushing 10 to `close down on the'seat 6. The cage 9V is suitably connected to agarbutt rod 11 sliding through` a guide plug 12 forming the lower end ofy a' plunger which includes a' plunger tube `12 of suitable length and may b e 'of sectional or unitary {construction as desired...

The plunger tube 13 is hereshown as" connected at its upper end to' a collar 14 to which isattached an upwardly extending tubular section 15 of the. plunger, this in turn being connected .'to the upper valve v16 and which upper valve is connected to the sucker rod 5,

The connecting collar or guide 14 has .a free sliding fit in a working barrel f8, the

upper end 'of which is mounted in the upper coupling or collar 3, and the lower end of which is shown as secured at 19 in the lower joint or shoe 6.

A feature of the invention resides in the construction of the plunger and in the packing thereof in the working barrel 18 so as to'secure an eiiicient and tight 'but running it of packing means. Means are provided panding thel packing means during the operation of the pump to insure a tight working it. The pump plunger and its packing, therefore, consists of one or more swab-like packinff devices, each of which, as clearly shown 1n Figs. 4 and 5, consists of a number of pieces'of suitable packing material 20, one end of each of whichpieces is suitably connected,as for instance each of the pieces being threaded upon a split wire ring 21. Thus a number of the acking pieces 2O when threaded upon the rlng 21 form a sub- Fig. 10 is a central longitudinal section of stantially cylindrical hollow swab, and one or more of. these is adaptedv to be arranged aloner and surround the plunger tube 13. In tie construction, shown, the connected lalso for automatically compressing 'and exends of the swab pieces are arranged in 'a socket or cup 22, and each cup` is provided with -a body portion 23 fitting over the plunger ,tube` 13. In the assembly of the plunger, one of the cups 22l ywith its body portion and an inserted swab is secured to they lower end of` the plunger tube as by threads 23, and this is then followed by another cup and with an inserted swab and so'onuntila suitable number of the swabs andcups have'been applied to the plunger, as is shown in Fig. 1.l o

To effect the automatic expansionof the swab-like packing device agalnst the workis shown as beveled as at 23, the bevel facel converging inwardly and downwardly ltoward the surface of the plunger tube 13 so that under load the expanding faces 23a of the series of cupswill serve to compress the swab devices and press the same outwardly against the contiguous surface'of the workingi barrel 18, the lower end face-of the cup bo y l ing barrel and .also inwardly against the adjacent surace of the plunger tube 13.

*It is desirable to rovide for `a positive downward sliding action of the swab devices l along with the lungertube 13, and to ob-v taina rm inter ock between the surface of the tube and the swabs, the outer surface of the tubevis shown` as toothed at 13? for any suitable distance along its' length, these teeth rmly/embedding in thegcompressed swab .material vdurin faction of the plunger.

' To prevent'kt e. loosening and loss of the packing eiiiciencyfoffthe swabs,-I Prefer to4 A employ means-for automatically locking the tions 26 to engage withthe yteeth 13 of theA plungertube. `.The contractile jaws. 26 are f. ,Y

` Vsprin V27g'- surrounding. the vsame. The jaws" compressed swabs, and such means is clearly shownfin IFig. v6` as including an expander upper end of t is expander body is arranged a series of contractile segmental jaws 26.'

having inwardly projecting tooth-like -pornormally under the contractile action of va and t e springare preferably enca'sedin a thimble 28v mounted on the expanderbody lp25.'` It' will be seen,=therefore, that during the action of the plu'n er,vv theg-wearof the` packing'materialand 1ts subsequent short# i .ening is compensated and the tight fit of the packing-is maintained by the automaticadvancing movement of th'efollower-like lock-j ingpjaws 26 which are disposed Ain a osiA tion vabove theup'permost of the pac 'ng swabsk F ,y During operationoffthe plungerl on its` downward stroke, oil `will pass into the plunger tube 13 through a perforated lowery sectiony 13 thereof' and vwill ascend throughthe tubeand eventually pass above the up-Y e per va1ve'16. l

A slightly modified form of the swabcup;

is shown in Figs.9 and 10 wherein a double ended cu is shown as including an intermediate bo y or ring 23 from which extends cup portions 22 at each end, and into these cup portions are adapted to -bearranged the contiguous ends of the swab devices 20'.

In this form of swab holder, the ends of. the.

lof oil or liquid being lifted by the plunger.

An important feature of the invention consists of means for de-sanding and for discharging oil from above the plunger in such instance as may be necessary. To ,that endy the'working barrel 18 is shown as provided with -an upper series of apertures 18285 and a lower series of apertures 18h, these series being splaced apart a distance somewhat greater t packing portion of the plunger. Therefore, if an undesirable amount of sand accumulates in the pump, the plunger can belifted by its sucker rod 5 until the garbutt'rod 11 is engaged by the guide lug 12in the` lower` end of the plunger, whereuponky further up? an the length of the eectivev ward movementof vthe plunl r-results in.v I

lifting thestanding valve bus ing 10jfro1n its seat 6.y In suchr an arrangement 'of'.theg.r

parts, the column'. of cil andsand collected above the plun er willimmediately Atend to descend-throng they ports 18"a'nd will flow down between the working barrel 18 andthe pump jacket 2 and` Will-pass rintoy the work-vr 111g barrel throughthe ports 18bandthence o vpast'the liftedor unseatedfoot valve;v

25 havin aconical face 25, and on the It will be seen, therefore,'.thatit `is possible by my invent1on to readil desan'd a 'pump at anyk time without entirely vremoving` or pulling theplungerand its; 'polish' rod or*V sucker rod .from the casing. It will beseen.` that I have rovided a plunger pump having an inner- `ube with a toothed ror roughened surface along which there is. slidable a compressible packing material adapted to'l conform" vwith an 'l inter- `lock on the roughened surface-of the tubel to 'hold' the packing against reversev Slipping',fbut `permitting itto. be' advanced downsl '-wardly, under the pressure .ofthe superinn o i posed load on the'vfpump'plun erinffthe 1 pump pipe'.r Also A'mounted-3on. 't "eitoothed plunger: tube i's"lai.mechunical`v ylo''zling def-j vice to engage the` teeth on the tubejand `fur- 1 ther 'tojhold theypackinggfagainst' reverse movement.l

. 'Furtherl embodiments., and

changes may be resorted to withinthe spirit of the invention as here claimed-2: :11.

`What is claimed ig,- 1

1.- In a plunger'- pumpy a plunger Vtube v acylindrical packing unrlsurrounding the tube, a retainer for one end of the packinglmedium, and an expanding means'operae tive against the opposite end of the packing a cylindrical packing medium surrounding the tube` a retainer 4for one end of the packino medium, and an expanding means operatlve against the opposite end ofthe packing medium whereby to compress the packing medium 'betweenthe plunger tube and the working barrel, said.' packing medium consisting of a swab-like group of ylongltudinal 'packingpieces the plunger tube being "provided with teeth on its exterior face to interlock with the packing medium.

3,' In a plunger pump,v a plunger tube, a cylindrical packing medium lsurrounding the tube, a retainer for one end of the packing medium, an expanding means operative against the opposite end ofthe packing medium whereby to compress the packing medium between the plunger tube andthe working barrel, said packing medium consisting of a swab-.like group of longitudinal packing pieces, and an automatic locking means slidable along the plunger. tube for maintaining the packing mediuin 'in a compressed condition. y 4

4. In afplunger pump, .a plunger tube, a cylindrical packing medium surrounding the tube, a retainer for one end of the .pac-king medium, and expanding means operative against theopposite end of the packing medium whereby to compress the packing medium between the plungel'tube and the working barrel, said packing medium consisting vofa swab-like group of longitudinal packing pieces, and anY automatic locking means slidable along the plunger tube for maintaining the packing medium in a compressed condition, theplunger tube having Ya toothed exterior surface engageable by r,the-

locking means to prevent reverse movement of the packing medium and said means.

- 5. Ina plunger pump a plunger tube, two annular swabs surrounding the tube, and a cup-like member in which one end of one annular swab is enclosed, said cup-like member having a wedge face operative to expand a contiguous end of the other swab.

6. In a plunger pump, a 'tubular plunger, and a cup member slidable along said plunger and provided with an annual swab surrounding the plunger tube, said swab consisting oi longitudinal pieces of packing material to lie along said. tube.

7. A packing swab forA plunger pumps, said swab lcomsisting of a cylindrical ygroup of parallel pieces of packing material, and means connecting the pieces at one end of the group. ,v l

8. A packing swabf for plunger pumps, said swab consisting of a cylindrical group of parallel pieces of packing material, and means connecting the pieces at one end of the group,` said 'means including an-element upon which the pieces are threaded. v

9. In a plungeigpump, a plunger tube having a: roughened exterior surface, cylindrical packing means surrounding thc. tube and which packing is adapted to be compressed by the superimposed load on the plunger so as to interlock upon the roughcned surface on the tube. i

10. In a plunger pump, a plunger tubehaving a roughened exterior surface, cylindrical acking means surrounding the tube and w ich packing is adapted to be compressed by the superimposed load on the plunger so as to interlock upon the roughened surface of the tube, and a mechanical locking device following thedsaid packing and also adapted to interlock on the roughcned surface of the tube.

Intestimony whereof I have signed my name to this specification.

HENRY M. GREEN. 

